package com.sky.aspect;

import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.Method;
import java.time.LocalDateTime;

@Aspect
@Component
@Slf4j
public class AutoFillAspect {
    @Pointcut("execution(* com.sky.mapper.*.*(..)) && @annotation(com.sky.annotation.AutoFill)")
    public void autoFillPointCut() {}

        @Before("autoFillPointCut()")
        public void autoFill(JoinPoint joinpoint){
            log.info("开始进行公共字段自动填充。。。");

            MethodSignature signature =(MethodSignature) joinpoint.getSignature();
            AutoFill autoFill = signature.getMethod().getAnnotation(AutoFill.class);
            OperationType operationType = autoFill.value();

            Object[] args = joinpoint.getArgs();
            if(args == null || args.length == 0){
                return;
            }

            Object entity = args[0];

            LocalDateTime now = LocalDateTime.now();
            Long currentId = BaseContext.getCurrentId();

            if (operationType == OperationType.INSERT) {

                try {
                    Method setCreateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
                    Method setCreateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER, Long.class);
                    Method setUpdateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                    Method setUpdateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);

                    setCreateTime.invoke(entity,now);
                    setCreateUser.invoke(entity,currentId);
                    setUpdateTime.invoke(entity,now);
                    setUpdateUser.invoke(entity,currentId);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }else if (operationType == OperationType.UPDATE){

                try {
                    Method setUpdateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                    Method setUpdateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);

                    setUpdateTime.invoke(entity,now);
                    setUpdateUser.invoke(entity,currentId);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }

        }
}
